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Non-contact active control method for vibration of micro thrust measurement system

A measurement system, non-contact technology, applied in the direction of using feedback control, etc., can solve the problems of measurement error, small vibration damping effect is not obvious, etc., and achieve the effect of high control accuracy

Active Publication Date: 2014-07-23
湖南鸿星科技有限公司
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AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the passive damping method of vibration of the existing micro-thrust measurement system causes measurement errors and the damping effect on micro-vibration is not obvious, it provides a method for the vibration of the swing arm or beam of the single pendulum or torsion pendulum measurement system that does not affect the measurement accuracy. Non-contact active control method with good damping effect on micro vibration

Method used

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  • Non-contact active control method for vibration of micro thrust measurement system
  • Non-contact active control method for vibration of micro thrust measurement system
  • Non-contact active control method for vibration of micro thrust measurement system

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Embodiment Construction

[0020] The invention uses the Ampere force between the local magnetic field and the current-carrying coil as the control force, uses the sensor to measure the angular displacement of the swing arm or beam, and controls the vibration of the swing arm or beam through an automatic control method to stabilize it at a balanced position .

[0021] attached figure 1 The schematic diagram of the vibration control system of the torsion beam is shown, and the vibration control steps are as follows:

[0022] 1. Install the force coil 3 on the torsion beam 1, the positions of the force coil 3 and the local uniform magnetic field 4 are as follows figure 1 shown. A part of the force coil 3 (0.15mm enamelled copper wire, 20 turns) passes through the local uniform magnetic field 4, and the energized force coil will be subjected to an upward or downward ampere force along the paper surface under the action of the magnetic field. Assuming that the length of the local uniform magnetic field 4...

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Abstract

The invention relates to a non-contact active control method for vibration of a micro thrust measurement system and relates to vibration control over a swing arm or a beam of a single-pendulum or torsional-pendulum type thrust measurement system of a space propulsion system of electric propulsion, laser micro propulsion and the like. According to the method, the ampere force between a local magnetic field and a current-carrying coil serves as the control force, a sensor is used for measuring angular displacement of the swing arm or the beam, and a closed loop feedback control method is used for controlling vibration of the swing arm or the beam so that the swing arm or the beam can be stabilized in a balance position. The method makes up the defect of an existing vibration damping method and has the outstanding advantages of being high in stabilization speed and control precision, free from additional error and the like.

Description

technical field [0001] The invention relates to a method for controlling the vibration of a swing arm or a beam of a micro-thrust measurement system, in particular to the vibration control of a swing arm or a beam of a single pendulum or torsional pendulum type thrust measurement system applied to space propulsion systems such as electric propulsion and laser micro-propulsion . Background technique [0002] The single pendulum or torsional pendulum thrust measurement system generally measures the angular displacement of the swing arm or beam to obtain thrust or impulse indirectly. For a measurement system with high sensitivity and precision, it may take several hours for the swing arm or crossbeam of the system to come to rest after a measurement due to the very small damping of the system itself. For applications that require multiple repeated measurements, this greatly affects the progress of the experiment and delays precious experiment time. Therefore, certain measures...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D3/12
Inventor 何振吴建军鲁高飞张代贤张华
Owner 湖南鸿星科技有限公司
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